Home / 519,860,287.86-779,784,420.06-126,389,343.12

Finding the Fourth Proportional to 519,860,287.86, 779,784,420.06 and 126,389,343.12

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Solution

The fourth proportional to 519,860,287.86, 779,784,420.06 and 126,389,343.12 is: 189,582,553.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,860,287.86 : 779,784,420.06 = 126,389,343.12 : x
  2. Step 2: Convert to fraction form
    519,860,287.86/779,784,420.06 = 126,389,343.12/x
  3. Step 3: Cross multiply
    519,860,287.86x = 779,784,420.06 × 126,389,343.12
  4. Step 4: Simplify right side
    519,860,287.86x = 98,556,440,626,593,552
  5. Step 5: Solve for x
    x = 98,556,440,626,593,552/519,860,287.86
  6. Step 6: Final answer
    x = 189,582,553.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.